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SAN DIEGO (KGTV) — Nearly three-quarters of the students in San Diego County are currently learning from home, and those numbers don’t make a lot of sense to MIT professor Martin Bazant.Bazant is one of the creators of the COVID-19 Indoor Safety Guideline. The free online tool simulates the fluid dynamics of respiratory droplets in various kinds of rooms to show users the risk of different indoor environments.“If you run the numbers for a typical classroom, especially if the students and the teachers are wearing masks, then the amount of time in the room can be very significant,” Bazant said. “Essentially those people could spend a week in the classroom and not have a problem.”Bazant says the six-foot rule that has largely determined which businesses can stay open is overly simplistic. In some cases, he says the rule creates a false sense of security. In other situations, he says it causes the closure of businesses or schools that could safely operate.“If you place nursing home beds six feet apart in a shared room, they are absolutely not safe,” he said. But he said well-ventilated classrooms, with teachers and students in masks, are another story.“It's only the United States where we follow the six-foot rule. That's given by the CDC. The World Health Organization all along has been saying one meter, which is about three feet. If you simply followed the one-meter rule, all our schools would be open, as they are in most of the world right now,” he said.Bazant and his colleague John Bush said they set out to design a tool that would reveal the risk of transmission based on science, not guesswork.Users start by selecting a room type, like a classroom or an airplane. From there, they can control a wide array of variables to dial in the risk, like the room size, the ceiling height, and the ventilation and filtration systems.From there, users can further tune the model by human behavior. How many people are in the room? Are they whispering, shouting or singing? How many are wearing masks?Mask usage is a critical component, Bazant says. The model quickly reveals the challenges of maskless activities in rooms with poor ventilation. Put five people without masks in a 400 square foot room with closed windows, and it becomes unsafe after 33 minutes.Bazant says studies on super spreader events show in indoor environments, the distance from an infected person doesn’t matter. Infected droplets spread and mix throughout the room like second-hand smoke from a cigarette.But with masks trapping droplets and diverting them upwards like a chimney, an environment like an airplane could be safe for several hours, according to the model. With more than 95% of the passengers and crew wearing surgical masks, a Boeing 737 could support 200 people -- around full capacity depending on the configuration -- for 18 hours. 2850

SAN DIEGO (KGTV) - Neighbors in College Area are a little more vigilant after a coyote attacking a chicken was caught on camera. Matt Dixon was grilling in his backyard when he heard squawking on the neighboring hillside. “One of the chicken flies into the fence,” said Dixon describing the video he took. “That’s when the coyote popped out of the clearing it there and made its way up and he eventually found what he was after.” Dixon posted the 28-second video online and found that people were quicker to forgive the coyote. “I got a lot of flak for not trying to help save the neighbor’s chicken and I can understand that,” said Dixon, “but it all happened so fast.” Other neighbors say they are more cautious with their children and pets outside knowing there can be coyotes in an urban area. 805

SAN DIEGO (KGTV) - On Monday afternoon, two brothers were sentenced in connection to the deadly freeway shooting of a Navy sailor who stopped to be a good Samaritan.Edson Acuna and Brandon Acuna learned their sentences following the 2018 shooting death of Navy sailor Curtis Adams. Edson Acuna was given a term of life without the possibility of parole plus 25 years to life plus 27 years and four months. He was ordered to pay ,000 in restitution and pay for associated fines. “He's going to be in prison for the rest of his life until he takes his last breath and I think that will give him time to pay these from prison wages,” the judge told the courtroom.Edson Acuna was convicted by jury of first degree murder while Brandon Acuna pleaded guilty to voluntary manslaughter. On Monday, Brandon Acuna was sentenced to 13 years in prison.Prosecutors argued that they burglarized a car outside of a Mount Hope home which led to a shootout with the homeowner. They tried to get away but a blown-out tire caused them to stall on the freeway. Adams stopped to help but Edson Acuna shot him after thinking that he was the homeowner from the shootout earlier in the night.Harvey Liberato and Susana Galvan were also in the brothers’ car and have entered plea agreements.The judge concluded the hearing by telling the courtroom that he hopes both men reflect in the years to come on the magnitude of the loss that their actions caused. 1441

SAN DIEGO (KGTV) -- Neighborhoods near the Miramar Landfill are reporting a resurgence of awful odors they believe are coming from the landfill. "You come out the door in the morning and it just hits you," said Matty Wuest of University City. About a mile away, fellow resident Janis Deady concurs. "Like last night at in the morning," she says, "the smell woke me up out of a dead sleep." So, exactly what does it smell like? The distant neighbors are at no loss for words. "If you take the natural gas smell," said Matty, "Mix that with dog poop and vomit. That's what it smell like." Janis said she'd lived near the landfill for more than 20 years without an issue, but that changed about three years ago. "All of the sudden in the 2016 we started smelling putrid, disgusting, horrid smells."The distant neighbors say complaints in 2016 lead to hearings with the San Diego County Air Pollution Control District; resulting in fines for the City of San Diego and mitigation measures that appeared to solve the problem. But in recent weeks they say the smell is back."You shouldn't have to live like that," said Janis, "Not when we pay these taxes." A public information officer for San Diego said by phone the short story is the rain. That as soon as the Miramar Landfill has a chance to dry out from all the recent rains, the odors will dry up as well. But residents say that's not sufficient. "I hope the city would mitigate this and not blame it on the rain or other excuses." Said Matty. "Bottom line," said Janis, "It's got to stop. This is from 2016 to now. We shouldn't still have these odors."Along with a phone interview, the city's public information office provided the below email to 10News:New measures currently in place or will be in place shortly as noted:Using special covering machine that applies plastic to working face each night. 2. Better for specific odor control than the tarps previously usedExpansion of landfill gas collection system - new collection wellsExisting wells were evaluated for repairs & maintenance to maximize operating efficiency.Odor dissipating system that run each night to keep any fugitive smells onsite will be extended to 9 a.M.Smaller working face where trash is dumped.No receipt of waste on sundays.Asp system for green waste processing(coming summer 2019)To our knowledge there are other potential odor sources in the area which have not implemented any mitigation measures. So additional investigation may be needed to determine if those sources are contributing to odors in the surrounding communities. 2572

SAN DIEGO (KGTV) - Police and other credit card experts are warning of a new scam being used to steal bank card information and PINs.Earlier this month, police arrested four people who installed small cameras on ATMs. They say there could be more.Experts say stand-alone ATMs at stores or in parking lots are the most enticing targets for the thieves, as are drive-up ATMs."Whenever we come up with a way to figure out how to thwart it, then the crooks can figure out how to zig past that zag," says SDSU Fowler College of Business Lecturer Steven Andres.Andres says the best thing people can do is avoid using cards altogether. Andres says to use apps like Apple Pay, which don't send any bank information during transactions."They don't actually send your real credit card number to the vendor that you're working with. Instead, a random number gets sent that's only valid for that transaction at that vendor on that minute of the day. So in the future if that vendor has their computer system hacked, that number's completely worthless," Andres says.Otherwise, Andres says to use a credit card instead of a debit card, that way you can dispute a charge and not have to wait for the stolen money to be put back in your account.He also advises people to stay away from drive-up ATMs where it's more difficult to cover your PIN as you type it in. 1354